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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 4 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.1004 − 997 =
  2. 2.1020 − 978 =
  3. 3.502 − 475 =
  4. 4.524 − 487 =
  5. 5.76 − 33 =
  6. 6.207 − 195 =
  7. 7.66 − 39 =
  8. 8.315 − 283 =
  9. 9.329 − 276 =
  10. 10.101 − 80 =
  11. 11.105 − 95 =
  12. 12.125 − 86 =
  13. 13.214 − 177 =
  14. 14.105 − 58 =
  15. 15.506 − 485 =
  16. 16.89 − 57 =
  17. 17.57 − 43 =
  18. 18.1012 − 980 =
  19. 19.1008 − 985 =
  20. 20.319 − 284 =
  21. 21.129 − 95 =
  22. 22.512 − 476 =
  23. 23.529 − 479 =
  24. 24.95 − 75 =
  25. 25.226 − 179 =
  26. 26.105 − 80 =
  27. 27.1023 − 976 =
  28. 28.117 − 89 =
  29. 29.210 − 197 =
  30. 30.201 − 187 =
  31. 31.85 − 74 =
  32. 32.311 − 275 =
  33. 33.121 − 92 =
  34. 34.114 − 93 =
  35. 35.1001 − 992 =
  36. 36.104 − 60 =
  37. 37.109 − 59 =
  38. 38.226 − 188 =
  39. 39.125 − 95 =
  40. 40.63 − 29 =

Answer key

  1. 7
  2. 42
  3. 27
  4. 37
  5. 43
  6. 12
  7. 27
  8. 32
  9. 53
  10. 21
  11. 10
  12. 39
  13. 37
  14. 47
  15. 21
  16. 32
  17. 14
  18. 32
  19. 23
  20. 35
  21. 34
  22. 36
  23. 50
  24. 20
  25. 47
  26. 25
  27. 47
  28. 28
  29. 13
  30. 14
  31. 11
  32. 36
  33. 29
  34. 21
  35. 9
  36. 44
  37. 50
  38. 38
  39. 30
  40. 34

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